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　晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 . Prv8 Shell

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Current File : //home/akaindir/public_html/crm/pkg/vtiger/extensions/Webservices/VTQL_Lexer.plex

<?php
global $where_col,$orderby,$in_started,$count;
$where_col = false;
$orderby = false;
$in_started = false;
$count = false;
function incrementN($lexer, $count){
$i = 0;
for(;$i<$count;$i++){
incState($lexer);
}
}
function incState($lexer){
$lexer->current_state++;
if($lexer->current_state === sizeof($lexer->mandatory_states)){
$lexer->mandatory = false;
}
}
function handleselect($lexer, $val){
if($lexer->mandatory){
if(strcasecmp($val, $lexer->mandatory_states[$lexer->current_state])===0){
incState($lexer);
return VTQL_Parser::SELECT;
}
}
}
function handlecolumn_list($lexer, $val){
global $count;
if($lexer->mandatory){
if(!(strcasecmp($val, $lexer->mandatory_states[2])===0)){
if(strcmp($val, "*")===0){
if(!$count){
incrementN($lexer, 1);
}
return VTQL_Parser::ASTERISK;
}else if((strcmp($val, "(")===0)){
return VTQL_Parser::PARENOPEN;
}else if(strcmp($val, ")")===0){
return VTQL_Parser::PARENCLOSE;
}else if((strcasecmp($val, "count")===0)){
$count = true;
return VTQL_Parser::COUNT;
}else if(strcmp($val, ",")===0){
return VTQL_Parser::COMMA;
}else{
return VTQL_Parser::COLUMNNAME;
}
}else{
incrementN($lexer, 2);
return VTQL_Parser::FRM;
}
}
}
function handlefrom($lexer, $val){
if((strcasecmp($val, $lexer->mandatory_states[$lexer->current_state])===0)){
incState($lexer);
return VTQL_Parser::FRM;
}
}
function handletable($lexer, $val){
if($lexer->mandatory){
$lexer->current_state =0;
$lexer->mandatory = false;
if(!(strcasecmp($val, $lexer->optional_states[$lexer->current_state])===0)){
return VTQL_Parser::TABLENAME;
}
}
}
function handlewhere($lexer, $val){
global $where_col,$in_started;
$val = trim($val);
if((strcmp($val, "=")===0)){
return VTQL_Parser::EQ;
}else if((strcasecmp($val, $lexer->optional_states[$lexer->current_state])===0)){
return VTQL_Parser::WHERE;
}else if((strcmp($val, "<")===0)){
return VTQL_Parser::LT;
}else if((strcmp($val, "<=")===0)){
return VTQL_Parser::LTE;
}else if((strcmp($val, ">=")===0)){
return VTQL_Parser::GTE;
}else if((strcmp($val, "!=")===0)){
return VTQL_Parser::NE;
}else if((strcmp($val, ">")===0)){
return VTQL_Parser::GT;
}else if((strcmp($val, "(")===0)){
return VTQL_Parser::PARENOPEN;
}else if((strcmp($val, ")")===0)){
if($in_started){
$in_started = false;
$where_col = false;
}
return VTQL_Parser::PARENCLOSE;
}else if((strcasecmp($val, "and")===0)){
return VTQL_Parser::LOGICAL_AND;
}else if((strcasecmp($val, "or")===0)){
return VTQL_Parser::LOGICAL_OR;
}else if(!$where_col){
$where_col = true;
return VTQL_Parser::COLUMNNAME;
}else if((strcasecmp($val, "in")===0)){
$in_started = true;
return VTQL_Parser::IN;
}else if(strcmp($val, ",")===0){
return VTQL_Parser::COMMA;
}else if(strcasecmp($val, "like")===0){
return VTQL_Parser::LIKE;
}else if($where_col){
if(!$in_started){
$where_col = false;
}
return VTQL_Parser::VALUE;
}
}
function handleorderby($lexer, $val){
global $orderby;
if(!$orderby){
	$orderby = true;
	return VTQL_Parser::ORDERBY;
}
if(strcmp($val, ",")===0){
return VTQL_Parser::COMMA;
}else if(strcasecmp($val, "asc")===0){
return VTQL_Parser::ASC;
}else if(strcasecmp($val, "desc")===0){
return VTQL_Parser::DESC;
}else{
return VTQL_Parser::COLUMNNAME;
}
}
function handlelimit($lexer, $val){
if((strcasecmp($val, "limit")===0)){
return VTQL_Parser::LIMIT;
}else if((strcmp($val, "(")===0)){
return VTQL_Parser::PARENOPEN;
}else if((strcmp($val, ")")===0)){
return VTQL_Parser::PARENCLOSE;
}else if(strcmp($val, ",")===0){
return VTQL_Parser::COMMA;
}else{
return VTQL_Parser::VALUE;
}
}
function handleend($lexer, $val){
return VTQL_Parser::SEMICOLON;
}
class VTQL_Lexer{
private $index;
public $token;
public $value;
public $linenum;
public $state = 1;
private $data;
public $mandatory_states = array('select','column_list','from','table');
public $optional_states = array('where', 'orderby', 'limit');
public $mandatory ;
public $current_state ;
function __construct($data)
{
$this->index = 0;
$this->data = $data;
$this->linenum = 1;
$this->mandatory = true;
$this->current_state = 0;
}
function __toString(){
return $this->token."";
}
/*!lex2php
%input $this->data
%counter $this->index
%token $this->token
%value $this->value
%line $this->linenum
query = /(\w+|'(?:[^']|'')+'|\(|\)|(\+|-)?\d+|,|\*|(?!<|>)=|<(?!=)|>(?!=)|<=|>=|!=|;)/
whitespace = /[ \t\r\n]+/
*/
/*!lex2php
%statename INITR
query {
global $orderby;
//echo "<br> ql state: ",$this->current_state," ",$this->value,"<br>";
if($this->mandatory){
//echo "<br> ql state: ",$this->current_state," ",$this->value,"<br>";
$handler = 'handle'.$this->mandatory_states[$this->current_state];
$this->token = $handler($this, $this->value);
}else{
$str = $this->value;
if(strcmp($this->value, ";")===0){
$this->token = handleend($this, $this->value);
return;
}
if(strcasecmp($this->value, "order")===0){
$orderby = true;
return false;
}else if(strcasecmp($this->value, "by") ===0 && $orderby ===true){
$orderby = false;
$this->current_state = 1;
}
$index = array_search(strtolower($str), $this->optional_states, true);
if($index !== false){
$this->current_state = $index;
}
$handler = 'handle'.$this->optional_states[$this->current_state];
$this->token = $handler($this, $this->value);
}//$this->yypushstate($this->value);
}
whitespace {
return false;
}
*/
}

?>

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